/**
* Test for the presence of incoming packets.
*
* @return true if there are packets available to be received.
*/
public boolean incoming() {
return rcvr.incoming();
}
/** Wait for Substrate to stop. */
public void join() throws Exception {
sndr.join();
rcvr.join();
}
/**
* Retrieve the next packet from the substrate.
*
* @return the next incoming packet
*/
public Packet receive() {
return rcvr.receive();
}
/** Start Substrate running. */
public void start() {
sndr.start();
rcvr.start();
}